package com.liang.lessonIp;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

//不需要连接服务器
public class UdpClient {
    public static void main(String[] args) throws  Exception{
        //1.建立一个socket
        DatagramSocket socket = new DatagramSocket();
        //2.建个包
        String msg = "你好，服务器";
        //发送给谁
        InetAddress localhost = InetAddress.getByName("localhost");
        int port = 9090;
        //数据，数据的长度起始，要发送给谁
        DatagramPacket packet = new DatagramPacket(msg.getBytes(),0, msg.getBytes().length, localhost,port);
        //3.发送包
        socket.send(packet);
        //关闭流
        socket.close();
    }
}
